--- /dev/null
+/* GStreamer
+ * Copyright (C) <1999> Erik Walthinsen <omega@cse.ogi.edu>
+ * Copyright (C) <2003> David Schleef <ds@schleef.org>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the
+ * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA.
+ */
+
+
+/*#define DEBUG_ENABLED */
+#include <gstvideofilter.h>
+
+
+
+#if 0
+/* elementfactory information */
+static GstElementDetails videofilter_details = {
+ "Video scaler",
+ "Filter/Video",
+ "LGPL",
+ "Resizes video",
+ VERSION,
+ "David Schleef <ds@schleef.org>",
+ "(C) 2003",
+};
+#endif
+
+/* GstVideofilter signals and args */
+enum {
+ /* FILL ME */
+ LAST_SIGNAL
+};
+
+enum {
+ ARG_0,
+ ARG_METHOD,
+ /* FILL ME */
+};
+
+static void gst_videofilter_class_init (GstVideofilterClass *klass);
+static void gst_videofilter_init (GstVideofilter *videofilter);
+
+static void gst_videofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec);
+static void gst_videofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec);
+
+static void gst_videofilter_chain (GstPad *pad, GstBuffer *buf);
+GstCaps * gst_videofilter_class_get_capslist(GstVideofilterClass *klass);
+static void gst_videofilter_setup(GstVideofilter *videofilter);
+
+static GstElementClass *parent_class = NULL;
+
+GType
+gst_videofilter_get_type (void)
+{
+ static GType videofilter_type = 0;
+
+ if (!videofilter_type) {
+ static const GTypeInfo videofilter_info = {
+ sizeof(GstVideofilterClass), NULL,
+ NULL,
+ (GClassInitFunc)gst_videofilter_class_init,
+ NULL,
+ NULL,
+ sizeof(GstVideofilter),
+ 0,
+ (GInstanceInitFunc)gst_videofilter_init,
+ };
+ videofilter_type = g_type_register_static(GST_TYPE_ELEMENT,
+ "GstVideofilter", &videofilter_info, G_TYPE_FLAG_ABSTRACT);
+ }
+ return videofilter_type;
+}
+
+static void
+gst_videofilter_class_init (GstVideofilterClass *klass)
+{
+ GObjectClass *gobject_class;
+ GstElementClass *gstelement_class;
+
+ gobject_class = (GObjectClass*)klass;
+ gstelement_class = (GstElementClass*)klass;
+
+ parent_class = g_type_class_ref(GST_TYPE_ELEMENT);
+
+ gobject_class->set_property = gst_videofilter_set_property;
+ gobject_class->get_property = gst_videofilter_get_property;
+
+ klass->formats = g_ptr_array_new();
+}
+
+#if 0
+static GstPadTemplate *
+gst_videofilter_src_template_factory(void)
+{
+ static GstPadTemplate *templ = NULL;
+
+ if(!templ){
+ GstCaps *caps = GST_CAPS_NEW("src","video/raw",
+ "width", GST_PROPS_INT_RANGE (0, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (0, G_MAXINT));
+
+ caps = gst_caps_intersect(caps, gst_videofilter_get_capslist ());
+
+ templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SRC, GST_PAD_ALWAYS, caps);
+ }
+ return templ;
+}
+
+static GstPadTemplate *
+gst_videofilter_sink_template_factory(void)
+{
+ static GstPadTemplate *templ = NULL;
+
+ if(!templ){
+ GstCaps *caps = GST_CAPS_NEW("sink","video/raw",
+ "width", GST_PROPS_INT_RANGE (0, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (0, G_MAXINT));
+
+ caps = gst_caps_intersect(caps, gst_videofilter_get_capslist ());
+
+ templ = GST_PAD_TEMPLATE_NEW("src", GST_PAD_SINK, GST_PAD_ALWAYS, caps);
+ }
+ return templ;
+}
+#endif
+
+static GstCaps *gst_videofilter_format_get_caps(GstVideofilterFormat *format)
+{
+ unsigned int fourcc;
+ GstCaps *caps;
+
+ if(format->filter_func==NULL)
+ return NULL;
+
+ fourcc = GST_MAKE_FOURCC(format->fourcc[0],format->fourcc[1],format->fourcc[2],format->fourcc[3]);
+
+ if(format->bpp){
+ caps = GST_CAPS_NEW ("videoflip", "video/raw",
+ "format", GST_PROPS_FOURCC (fourcc),
+ "depth", GST_PROPS_INT(format->bpp),
+ "bpp", GST_PROPS_INT(format->depth),
+ "endianness", GST_PROPS_INT(format->endianness),
+ "red_mask", GST_PROPS_INT(format->red_mask),
+ "green_mask", GST_PROPS_INT(format->green_mask),
+ "blue_mask", GST_PROPS_INT(format->blue_mask));
+ }else{
+ caps = GST_CAPS_NEW ("videoflip", "video/raw",
+ "format", GST_PROPS_FOURCC (fourcc));
+ }
+
+ return caps;
+}
+
+GstCaps * gst_videofilter_class_get_capslist(GstVideofilterClass *klass)
+{
+ static GstCaps *capslist = NULL;
+ GstCaps *caps;
+ int i;
+
+ if (capslist){
+ gst_caps_ref(capslist);
+ return capslist;
+ }
+
+ for(i=0;i<klass->formats->len;i++){
+ caps = gst_videofilter_format_get_caps(g_ptr_array_index(klass->formats,i));
+ capslist = gst_caps_append(capslist, caps);
+ }
+
+ gst_caps_ref(capslist);
+ return capslist;
+}
+
+static GstCaps *
+gst_videofilter_sink_getcaps (GstPad *pad, GstCaps *caps)
+{
+ GstVideofilter *videofilter;
+ GstVideofilterClass *klass;
+ GstCaps *capslist = NULL;
+ GstCaps *peercaps;
+ GstCaps *sizecaps;
+ int i;
+
+ GST_DEBUG("gst_videofilter_sink_getcaps");
+ videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
+
+ klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
+
+ /* get list of peer's caps */
+ peercaps = gst_pad_get_allowed_caps (videofilter->srcpad);
+ g_print("peercaps: %s\n", gst_caps_to_string(peercaps));
+
+ /* FIXME videofilter doesn't allow passthru of video formats it
+ * doesn't understand. */
+ /* Look through our list of caps and find those that match with
+ * the peer's formats. Create a list of them. */
+ /* FIXME optimize if peercaps == NULL */
+ for(i=0;i<klass->formats->len;i++){
+ GstCaps *icaps;
+ GstCaps *fromcaps = gst_videofilter_format_get_caps(g_ptr_array_index(
+ klass->formats,i));
+
+ g_print("testing caps: %s\n", gst_caps_to_string(fromcaps));
+
+ icaps = gst_caps_intersect(fromcaps, peercaps);
+ //if(gst_caps_is_always_compatible(fromcaps, peercaps)){
+ if(icaps != NULL){
+ capslist = gst_caps_append(capslist, fromcaps);
+ g_print("(yes)\n");
+ }else{
+ g_print("(no)\n");
+ }
+ //gst_caps_unref (fromcaps);
+ if(icaps) gst_caps_unref (icaps);
+ }
+ gst_caps_unref (peercaps);
+
+ sizecaps = GST_CAPS_NEW("videofilter_size","video/raw",
+ "width", GST_PROPS_INT_RANGE (0, G_MAXINT),
+ "height", GST_PROPS_INT_RANGE (0, G_MAXINT));
+
+ caps = gst_caps_intersect(capslist, sizecaps);
+ gst_caps_unref (sizecaps);
+
+ g_print("getcaps: %s\n",gst_caps_to_string(caps));
+
+ return caps;
+}
+
+static GstPadLinkReturn
+gst_videofilter_src_link (GstPad *pad, GstCaps *caps)
+{
+ GstVideofilter *videofilter;
+ GstPadLinkReturn ret;
+ GstCaps *peercaps;
+
+ GST_DEBUG("gst_videofilter_src_link");
+ videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
+
+ if (!GST_CAPS_IS_FIXED (caps)) {
+ return GST_PAD_LINK_DELAYED;
+ }
+
+ gst_caps_debug(caps,"ack");
+
+ videofilter->format = gst_videofilter_find_format_by_caps (videofilter,caps);
+ g_return_val_if_fail(videofilter->format, GST_PAD_LINK_REFUSED);
+
+ gst_caps_get_int (caps, "width", &videofilter->to_width);
+ gst_caps_get_int (caps, "height", &videofilter->to_height);
+
+ GST_DEBUG("width %d height %d",videofilter->to_width,videofilter->to_height);
+
+ peercaps = gst_caps_copy(caps);
+
+ gst_caps_set(peercaps, "width", GST_PROPS_INT_RANGE (0, G_MAXINT));
+ gst_caps_set(peercaps, "height", GST_PROPS_INT_RANGE (0, G_MAXINT));
+
+ ret = gst_pad_try_set_caps (videofilter->srcpad, peercaps);
+
+ gst_caps_unref(peercaps);
+
+ if(ret==GST_PAD_LINK_OK){
+ caps = gst_pad_get_caps (videofilter->srcpad);
+
+ gst_caps_get_int (caps, "width", &videofilter->from_width);
+ gst_caps_get_int (caps, "height", &videofilter->from_height);
+ //gst_videofilter_setup(videofilter);
+ }
+
+ return ret;
+}
+
+static GstPadLinkReturn
+gst_videofilter_sink_link (GstPad *pad, GstCaps *caps)
+{
+ GstVideofilter *videofilter;
+ GstPadLinkReturn ret;
+ GstCaps *peercaps;
+
+ GST_DEBUG("gst_videofilter_sink_link");
+ videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
+
+ if (!GST_CAPS_IS_FIXED (caps)) {
+ return GST_PAD_LINK_DELAYED;
+ }
+
+ videofilter->format = gst_videofilter_find_format_by_caps (videofilter,caps);
+ g_print("sink_link: %s\n",gst_caps_to_string(caps));
+ g_return_val_if_fail(videofilter->format, GST_PAD_LINK_REFUSED);
+
+ gst_caps_get_int (caps, "width", &videofilter->from_width);
+ gst_caps_get_int (caps, "height", &videofilter->from_height);
+
+ gst_videofilter_setup(videofilter);
+
+ peercaps = gst_caps_copy(caps);
+
+ gst_caps_set(peercaps, "width", GST_PROPS_INT (videofilter->to_width));
+ gst_caps_set(peercaps, "height", GST_PROPS_INT (videofilter->to_height));
+
+ ret = gst_pad_try_set_caps (videofilter->srcpad, peercaps);
+
+ gst_caps_unref(peercaps);
+
+ if(ret==GST_PAD_LINK_OK || ret==GST_PAD_LINK_DONE){
+ caps = gst_pad_get_caps (videofilter->srcpad);
+
+ //gst_caps_get_int (caps, "width", &videofilter->to_width);
+ //gst_caps_get_int (caps, "height", &videofilter->to_height);
+ //gst_videofilter_setup(videofilter);
+ }
+
+ g_print("returning %d\n",ret);
+
+ return ret;
+}
+
+static void
+gst_videofilter_init (GstVideofilter *videofilter)
+{
+ GST_DEBUG("gst_videofilter_init");
+
+}
+
+void
+gst_videofilter_postinit (GstVideofilter *videofilter)
+{
+ /* sinkpad and srcpad should be inited by subclass */
+
+ /* FIXME */
+ //videofilter->sinkpad = NULL;
+ gst_element_add_pad(GST_ELEMENT(videofilter),videofilter->sinkpad);
+ gst_pad_set_chain_function(videofilter->sinkpad,gst_videofilter_chain);
+ gst_pad_set_link_function(videofilter->sinkpad,gst_videofilter_sink_link);
+ gst_pad_set_getcaps_function(videofilter->sinkpad,gst_videofilter_sink_getcaps);
+
+ /* FIXME */
+ //videofilter->srcpad = NULL;
+ gst_element_add_pad(GST_ELEMENT(videofilter),videofilter->srcpad);
+ gst_pad_set_link_function(videofilter->srcpad,gst_videofilter_src_link);
+ //gst_pad_set_getcaps_function(videofilter->srcpad,gst_videofilter_getcaps);
+
+ videofilter->inited = FALSE;
+}
+
+
+static void
+gst_videofilter_chain (GstPad *pad, GstBuffer *buf)
+{
+ GstVideofilter *videofilter;
+ guchar *data;
+ gulong size;
+ GstBuffer *outbuf;
+
+ GST_DEBUG ("gst_videofilter_chain");
+
+ g_return_if_fail (pad != NULL);
+ g_return_if_fail (GST_IS_PAD (pad));
+ g_return_if_fail (buf != NULL);
+
+ videofilter = GST_VIDEOFILTER (gst_pad_get_parent (pad));
+ //g_return_if_fail (videofilter->inited);
+
+ data = GST_BUFFER_DATA(buf);
+ size = GST_BUFFER_SIZE(buf);
+
+ if(videofilter->passthru){
+ gst_pad_push(videofilter->srcpad, buf);
+ return;
+ }
+
+ GST_DEBUG ("gst_videofilter_chain: got buffer of %ld bytes in '%s'",size,
+ GST_OBJECT_NAME (videofilter));
+
+ GST_DEBUG("size=%ld from=%dx%d to=%dx%d fromsize=%ld (should be %d) tosize=%d",
+ size,
+ videofilter->from_width, videofilter->from_height,
+ videofilter->to_width, videofilter->to_height,
+ size, videofilter->from_buf_size,
+ videofilter->to_buf_size);
+
+ g_return_if_fail (size == videofilter->from_buf_size);
+
+ outbuf = gst_buffer_new();
+ /* FIXME: handle bufferpools */
+ GST_BUFFER_SIZE(outbuf) = videofilter->to_buf_size;
+ GST_BUFFER_DATA(outbuf) = g_malloc (videofilter->to_buf_size);
+ GST_BUFFER_TIMESTAMP(outbuf) = GST_BUFFER_TIMESTAMP(buf);
+
+ g_return_if_fail(videofilter->format);
+ GST_DEBUG ("format %s",videofilter->format->fourcc);
+
+ videofilter->in_buf = buf;
+ videofilter->out_buf = outbuf;
+
+ videofilter->format->filter_func(videofilter, GST_BUFFER_DATA(outbuf), data);
+
+ GST_DEBUG ("gst_videofilter_chain: pushing buffer of %d bytes in '%s'",GST_BUFFER_SIZE(outbuf),
+ GST_OBJECT_NAME (videofilter));
+
+ gst_pad_push(videofilter->srcpad, outbuf);
+
+ gst_buffer_unref(buf);
+}
+
+static void
+gst_videofilter_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec)
+{
+ GstVideofilter *src;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_VIDEOFILTER(object));
+ src = GST_VIDEOFILTER(object);
+
+ GST_DEBUG("gst_videofilter_set_property");
+ switch (prop_id) {
+ default:
+ break;
+ }
+}
+
+static void
+gst_videofilter_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec)
+{
+ GstVideofilter *src;
+
+ /* it's not null if we got it, but it might not be ours */
+ g_return_if_fail(GST_IS_VIDEOFILTER(object));
+ src = GST_VIDEOFILTER(object);
+
+ switch (prop_id) {
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+int gst_videofilter_get_input_width(GstVideofilter *videofilter)
+{
+ g_return_val_if_fail(GST_IS_VIDEOFILTER(videofilter),0);
+
+ return videofilter->from_width;
+}
+
+int gst_videofilter_get_input_height(GstVideofilter *videofilter)
+{
+ g_return_val_if_fail(GST_IS_VIDEOFILTER(videofilter),0);
+
+ return videofilter->from_height;
+}
+
+void gst_videofilter_set_output_size(GstVideofilter *videofilter,
+ int width, int height)
+{
+ int ret;
+ GstCaps *srccaps;
+
+ g_return_if_fail(GST_IS_VIDEOFILTER(videofilter));
+
+ videofilter->to_width = width;
+ videofilter->to_height = height;
+
+ videofilter->to_buf_size = (videofilter->to_width * videofilter->to_height
+ * videofilter->format->depth)/8;
+
+ srccaps = gst_caps_copy(gst_pad_get_caps(videofilter->srcpad));
+
+ gst_caps_set(srccaps, "width", GST_PROPS_INT (videofilter->to_width));
+ gst_caps_set(srccaps, "height", GST_PROPS_INT (videofilter->to_height));
+
+ ret = gst_pad_try_set_caps (videofilter->srcpad, srccaps);
+
+ g_print("try_set_caps() returned %d\n", ret);
+
+}
+
+static void gst_videofilter_setup(GstVideofilter *videofilter)
+{
+ GstVideofilterClass *klass;
+
+ klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
+
+ if(klass->setup){
+ klass->setup(videofilter);
+ }
+
+ if(videofilter->to_width == 0){
+ videofilter->to_width = videofilter->from_width;
+ }
+ if(videofilter->to_height == 0){
+ videofilter->to_height = videofilter->from_height;
+ }
+
+ g_return_if_fail(videofilter->format != NULL);
+ g_return_if_fail(videofilter->from_width > 0);
+ g_return_if_fail(videofilter->from_height > 0);
+ g_return_if_fail(videofilter->to_width > 0);
+ g_return_if_fail(videofilter->to_height > 0);
+
+ videofilter->from_buf_size = (videofilter->from_width * videofilter->from_height *
+ videofilter->format->depth) / 8;
+ videofilter->to_buf_size = (videofilter->to_width * videofilter->to_height *
+ videofilter->format->depth) / 8;
+
+ videofilter->inited = TRUE;
+}
+
+GstVideofilterFormat *gst_videofilter_find_format_by_caps(GstVideofilter *videofilter,
+ GstCaps *caps)
+{
+ int i;
+ GstCaps *c;
+ GstVideofilterClass *klass;
+ GstVideofilterFormat *format;
+
+ klass = GST_VIDEOFILTER_CLASS(G_OBJECT_GET_CLASS(videofilter));
+
+ g_return_val_if_fail(caps != NULL, NULL);
+
+ for(i=0;i<klass->formats->len;i++){
+ format = g_ptr_array_index(klass->formats,i);
+ c = gst_videofilter_format_get_caps(format);
+
+ if(c){
+ if(gst_caps_is_always_compatible(caps, c)){
+ gst_caps_unref(c);
+ return format;
+ }
+ }
+ gst_caps_unref(c);
+ }
+
+ return NULL;
+}
+
+void gst_videofilter_class_add_format(GstVideofilterClass *videofilterclass,
+ GstVideofilterFormat *format)
+{
+ g_ptr_array_add(videofilterclass->formats, format);
+}
+
+static gboolean
+plugin_init (GModule *module, GstPlugin *plugin)
+{
+#if 0
+ GstElementFactory *factory;
+
+ /* create an elementfactory for the videofilter element */
+ factory = gst_element_factory_new("videofilter",GST_TYPE_VIDEOFILTER,
+ &videofilter_details);
+ g_return_val_if_fail(factory != NULL, FALSE);
+
+ /* FIXME: we need to init the class before we can call the
+ * pad template factories */
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (gst_videofilter_sink_template_factory));
+ gst_element_factory_add_pad_template (factory,
+ GST_PAD_TEMPLATE_GET (gst_videofilter_src_template_factory));
+
+ gst_plugin_add_feature (plugin, GST_PLUGIN_FEATURE (factory));
+#endif
+
+ return TRUE;
+}
+
+GstPluginDesc plugin_desc = {
+ GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "gstvideofilter",
+ plugin_init
+};
projects / platform / upstream / gst-plugins-base.git / commitdiff